Consistently sick (nausea/vomiting) the day after injections after moving from 5mg to 7.5mg, seeking advice.

So since im about to talk medical stuff, this might get a little TMI but I want the full picture of whats going on so many someone has some advice that can help.

Since moving up from 5mg to 7.5mg, ive been having nausea to the point to puking the day after my injection. Third week in a row like this.

I take my injections around 7am on Wednesdays. Things feel normal that day. The next day on Thursday however I feel constipated, gassy (sulfer burps) and bloated. Ill feel like I need to poop but nothing. By Thursday night I feel nauseated and often throw up. Eventually Thursday night I will have a bowel movement and (sorry for the TMI) but its a lot, ill often have to go several times throughout the evening. This is also the 3rd week ive throw up Thursday evening due to nausea. Puking makes me feel better.

What ive done so far. I started taking metamucil tablets (2 capsules) at night before bed. Started this about a week ago.

Also tried to manage nausea with Pepto Bismo.

Ive tried eating smaller more frequently meals and trying to eat plan foods, especially mid week around injection day.

Other then Thursday. The rest of the week has no issues.

Any advice on how to make Thursday more manageable?

Edit: this week was the 3rd 7.5mg injection ive had. Had zero side effects or issues on 5mg, however the weight loss stalled after losing 20 pounds. On 7.5 the weight loss has continued.