Trying new protocol. Anyone been on biweekly Bicillin injections?

Hi folks,

Trying a new abx protocol. Third in a month.
For those unaware, was dx'd IgM pos for Lyme in 2014. Bartonella-esque symptoms but tested negative for Bart through Galaxy labs. Treated for six mos. on oral abx. Improved. Started slowly seeing symptoms crop up in 2017.

Fast forward May 2019... developed another full on flare.

Saw new LLMD in new city in CA, in July. Started Doxy in Aug. Made me very sick to my stomach.
Started Bactrim & Biaxin Sept 14. Lasted a week. That combo very hard on metabolism, heart, and electrolytes. Stayed on Bactrim. Quit Biaxin.

Now LLMD is trying biweekly injections of Bicillin and Bactrim. My symptoms are predominantly Bartonella w/some Babs symptoms.

Anyone been on Bicillin? Thoughts/suggestions?

Thanks!