I've been taking Intraros for about 10 days now and after the third day I started having a bitter taste in my mouth and tingling on my tongue, do I need to stop the therapy?

At the outset, it should be noted that any modifications in therapy, including discontinuation of the drug, should be made after consultation with the attending physician who is familiar with your health condition in detail. We wrote more about this in the article:

https://www.gdziepolek.pl/artykuly/czy-jak-i-kiedy-mozna-odstawic-leki

If you experience unpleasant symptoms such as a bitter taste in your mouth and tingling on your tongue and associate this with taking Intrarosa, it is recommended that you consult your doctor. Although the above-mentioned symptoms are not listed among the side effects of Intraosa, the severity of the side effects depends on the individual patient's sensitivity, dose and combination of drugs.

If you do not have the possibility of an in-person visit, I encourage you to take advantage of the teleconsultation:
https://www.gdziepolek.pl/telekonsultacja/z-ginekologiem

I encourage you to report the symptoms you are experiencing to your doctor, as well as to report the occurrence of an adverse reaction of the preparation. Reporting side effects allows you to increase control over the medicines available on the market. We wrote more about how and why to report side effects in the article: 

https://www.gdziepolek.pl/artykuly/jak-i-dlaczego-zglaszac-dzialania-niepozadane

Through Gdziepolki, it is possible to book Intrarosa at a selected pharmacy and collect it upon presentation of a prescription:

https://www.gdziepolek.pl/produkty/98602/intrarosa-globulki-dopochwowe/apteki