Hello! I ran across your post and the personal trainer in me couldn't pass it

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I don't really know what the previous poster was saying.. Not to be rude but if someone is asking a questions about fertility I don't think you should be just throwing out exercises.
Ok back to your question. It is a tricky one because you say you do ovulate on your own. Have you confirmed with bbt(temping) or just opk's? Just because it is common for our bodirs to gear up for ovulation and then not do it at all..Our body is a very strange thing. If you do fall in a category of obese/morbidly obese weight CAN affect your fertility but there are exceptions to every rule. It is possible to get pregnant while being overweight. But in general weight loss or even starting an exercise regime and healthy eating can positive affect not only your fertility but also your health during pregnancy and your baby's healthy.
what kinda of weight loss surgery did you have done? If it was fairly recently your body may just be reacting to surgery so you do need to wait until you heal before any work out regimes and that you have been cleared by a dr. Your internal organs kind of panic when they are touched during surgery and don't necessarily work the way you want them to right afterwards which is why constipation is common side affect after any surgery. also wait until your dr clears you do try and get pregnant. I know you want to do it right away but having the stress of such a drastic surgery plus your diet is about to change along with your vitamin intake you need your body to be at its bed before you get pregnant. People do get pregnant right away after a surgery but it is recommended you don't because that is alot of stress for your body to be put under and your baby may not get the nutrients it needs right away. But remember there is an exception to every rule.
I hope I answered your questions. Yes weight can affect fertility but having your surgery puts you one step closer to a healthy lifestyle and losing weight. I would also say once you are cleared by a dr please start working out. At least 30 min a day, if you join a gym most times you can get a free personal training session. Just to get you started or even show you correct work outs or even an intro into a gym if you have never used any equipment. Just because you had the surgery doesn't mean you will stay skinny forever. I have seen lots of people gain their weight back which is unfortunate. Look at this weight loss surgery as a jump start to your fitness life and continue to follow your dr's orders on food, vit, and exercise.
Good luck!