I Have Been On Methydopa For About Two Weeks And

I have been on methydopa for about two weeks and have felt increasingly short of breath and tired. I a, also on labetolol 300 mg bid, but have been on that drug before with no side effects. My current BP is100/67 with a pulse of 84. Do you think the methydopa could be causing sob? My pulse ox was 98% last week.