Seeking Natural Remedies for Severe Constipation - Need Advice!

Im looking for some homeopathic ways to guarantee a bowl movement. I've been to the ER 2xs this past 2 weeks bc I can't pass my stool. It's really weird bc at one point I could feel my bowels moving and it felt like I was going but when I looked, nothing was there. As gross as this sounds, it kinda feels like I'm going to the bathroom inside myself but it's not coming out the hole. I have massive amount of pressure in my lower gut and pushing heavily on my bladder. I feel nauseous and can only eat small amounts bc my belly is too full and bloated. I am passing gas but I have to rock and push very hard to produce it. I've taken almost everything over the counter and the only thing that's ever worked for me is Linzess so I've had 3 separate doctors prescribe it to me, only to find out that it needs some type of authorization and I don't even know who is responsible for that?? I'm getting a referral from my pcp today to go to a gastric orthopedic. He should be able to help me, right? Anything that works for u, I'm open and willing to try (unless I've already tried it) and I'm even more interested if it happens to be easy to obtain and all natural but I'm willing to try anything once. Having this issue is so uncomfortable. I can't do any of the things I normally do, I'm gaining a lot of weight and there's probably parasites in my colon. Someone please give me some advice!!