Bloating: Fertility medications can heavily impact how your body retains water, leading to the dreaded side effect of bloating. This is especially common in your midsection, where fluid can build up near the ovaries (creating abdominal tenderness, too). You can combat bloating by increasing your fluid intake and participating in light exercise such as walking.
Sometimes problems getting pregnant for a second or subsequent time are related to a complication that occurred in a prior pregnancy or prior to delivery (damage to the uterus, for instance). But most often, secondary infertility is caused by the same factors that would cause primary infertility — issues like advanced age, obesity, ovulation problems and so on.