Bloated and hard lower abdomen help!

I just ended my period about 4 days ago and about 3-4 weeks ago I started noticing my stomach bloating and getting hard. I have always been skinny as a board and my stomach has always been soft. But over the past weeks my stomach has been hardening and bloating and when I go to lay down on my stomach to sleep it is uncomfortable. When I eat it feels so full like my stomach is stretching even if I barely ate anything. I have a history of IBS 5 years ago but it never did this and I haven’t really had IBS symptoms since, except for diarrhea. I am also very constipated right now, and normally I usually poop like 2+ times a day.

Has anyone else experienced this?