First heat cycle, want to make sure everything seems normal

I have a 1yo (14 months) French bulldog - she has a recessed vulva so our vet recommended she go through 1 heat cycle.

She started bleeding about 5 days ago and since then has gotten pretty lethargic at home. Past couple of days she’s also been experiencing diarrhea/loose stools. Shes not running to the bathroom or anything, but when she goes it’s pretty liquid. Eating and drinking mostly normally, somewhat lower appetite.

Today on our morning walk she pooped once (still very loose but an improvement over yesterday) then strained to poop again and nothing came out. Then she vomited a couple of times - because she hadn’t eaten anything yet this morning there wasn’t anything for her to spit up, but it still felt like it was different from her stomach empty bile barfs she’s had from time to time.

From what I’m reading, this seems like it’s not unexpected but worthy of keeping an eye on and potentially contacting her vet. Looking for advice on what concerning escalation might look like from here, what still feels “normal,” or just reassurance that the heat is proceeding the way you’d expect. Thank you in advance!