What Causes Swelling Of Abdomen And Constipation After Undergoing Appendectomy?

Hello! Congrats on such gret service you give on this page. I have 2 questions: 1. I had an open appendicectomy surgery about a month and a half ago. My lower belly is still swollen and I'm wondering how long it is going to take for it to go down. I am a very slim guy (even skinny some might say) who does sports and I've never had it like this before. I could even say I have a nice six-pack so it looks weird to me right now. I feel no pain at all or had any complications after the surgery.2. I've been a bit constipated these last two days and I'm so worried about pushing but I just can't "get it done" Anyways I have done it (push a bit hard) due to the urge. Is it too dangerous? I haven`t felt any pain or anything but it is still worring because I don't want to burst a stitch or something...Thanks in advance!