Yes, I Have Had Problems With Constipation Nearly All My

Yes, I have had problems with constipation nearly all my life and I am 53 years old. Lately I can’t have a bowel movement with taking a laxative and then it seems I don’t empty out by bowels. I lately have been having gas for which I have been taking tablets over the counter as I’m embarrassed to be around others and pass loud gas. I see no black stool bnor bright red blood but I believe I have been getting more and more nauseated. Unsure if related to bowel problem or not. Please advise.